Local kernel memory corruption via canceled pNFS open
Published Jun 18, 2025 · Updated Aug 5, 2026
Use-after-free in affected Linux NFSv4/pNFS client kernels allows local users to corrupt kernel memory via an interrupted file open. Canceling the killable OPEN RPC wait frees the open slot and nfs4_layoutget arguments while the outstanding OPEN compound still references lg_args and lg_res. Reachability requires local access to an already mounted pNFS filesystem; reuse by the RPC layer can disclose memory, hijack control flow, or panic the kernel.
Summary
What happened
Use-after-free in affected Linux NFSv4/pNFS client kernels allows local users to corrupt kernel memory via an interrupted file open. Canceling the killable OPEN RPC wait frees the open slot and nfs4_layoutget arguments while the outstanding OPEN compound still references lg_args and lg_res. Reachability requires local access to an already mounted pNFS filesystem; reuse by the RPC layer can disclose memory, hijack control flow, or panic the kernel.
The record
- CVE
- CVE-2022-50072
- Published
- Jun 18, 2025
- Updated
- Aug 5, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-416, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 18, 2025CVE publishedPublication date reported by the CVE source.
- Aug 5, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=08d7a26d115cc7892668baa9750f64bd8baca29b
- Affected versionversion=0ee5b9644f06b4d3cdcd9544f43f63312e425a4c <76ffd2042438769298f34b76102b40dea89de616
- Affected versionversion=4.19.247 <4.19.256
- Affected versionversion=5.10.122 <5.10.138
- Affected versionversion=5.15.47 <5.15.63
- Affected versionversion=5.17.15 <5.18
- Affected versionversion=5.18.4 <5.19
- Affected versionversion=5.19
- Affected versionversion=5.4.198 <5.4.211
- Affected versionversion=6949493884fe88500de4af182588e071cf1544ee <2135e5d56278ffdb1c2e6d325dc6b87f669b9dac
- Affected versionversion=6949493884fe88500de4af182588e071cf1544ee <b03d1117e9be7c7da60e466eaf9beed85c5916c8
- Affected versionversion=6b3fc1496e7227cd6a39a80bbfb7588ef7c7a010 <0fffb46ff3d5ed4668aca96441ec7a25b793bd6f
- Affected versionversion=a2b3be930e79cc5d9d829f158e31172b2043f0cd <f7ee3b772d9de87387a725caa04bc041ac7fe5ec
- Affected versionversion=d4c2a041ed3ba114502d5ed6ace5b1a48d637a8e <a4cf3dadd1fa43609f7c6570c9116b0e0a9923d1
- Affected versionversion=ea759ae0a9ae5acee677d722129710ac89cc59c1
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
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Your stack
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